Not that I'm aware of. Most of the guys wear mouthguards, which I think is pretty smart to do.
Helmets have changed, but not drastically. They've improved, and they're always working on making things better, but again, it's not the equipment. The speed of the game right now is just so quick that when you have two bodies colliding—and it's inevitable that they're going to collide—a helmet's not going to do anything. It's not going to do anything even if they're slower, in many situations.
These things are going to occur. Concussions are going to occur.